English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

4′-(4-Biphenylyl)-4,2′:6′,4′′-terpyridine (1) reacts with ZnCl2 or ZnBr2 to produce discrete metallohexacycles instead of the expected one-dimensional coordination polymers. Structural determination of [{ZnCl2(1)}6] and [{ZnBr2(1)}6] reveals that the metallomacrocycles adopt a conformation in which the biphenyl domains are in an alternating up/down arrangement (conformer I). The hexamers pack into tubes; within each tube, biphenyl domains of every second hexamer are interdigitated, and these assemblies then interlock to produce a rigid architecture supported by pyridine–phenyl face-to-face contacts. π-Stacking between 4,2′:6′,4′′-tpy domains operates between adjacent tubes. Reaction of ZnCl2 or ZnBr2 with 4′-(2′,3′,4′,5′,6′-pentafluorobiphenyl-4-yl)-4,2′:6′,4′′-terpyridine (2) leads to [{ZnCl2(2)}6] and [{ZnBr2(2)}6], each crystallizing in two conformations; the centrosymmetric chair-conformer (II) is dominant with respect to the tub-like conformer I. Both conformers pack into tube assemblies, but that consisting of conformer II is less rigid than that of I. Reaction of 4′-(4-(naphthalen-1-yl)phenyl)-4,2′:6′,4′′-terpyridine (3) with ZnCl2 or ZnBr2 leads to [{ZnX2(2)}6] (X = Cl, Br) in conformer I; disordering of the naphthyl substituents is problematic. Assembly of the metallohexacycle in the presence of C60 results in the formation of the host–guest complex [2{ZnCl2(3)}6·C60]·6MeOH·16H2O. The [{ZnCl2(3)}6] units assemble into a tube-like array that mimics that observed in the parent host. In the host–guest complex, each crystallographically-ordered C60 is trapped between six ordered naphthyl units, three from one hexamer and three from its interdigitated partner, and the C60–six-naphthyl unit sits centrally within a second [{ZnCl2(3)}6] macrocycle. In contrast to previously described tube-like host–guest assemblies featuring fullerene entrapment, [2{ZnCl2(3)}6·C60] is unusual in having an ordered array of C60 molecules present in every other available cavity, despite the fact that sterically, the ‘empty’ cavity could, in principle, host a C60 guest.\u

Metallohexacycles containing 4′-aryl-4,2′:6′,4′′-terpyridines: conformational preferences and fullerene capture